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|Title: ||Melt compounding of rigid PVC formulations with hydrotalcites|
|Authors: ||Hitt, D.J.|
Thomas, Noreen L.
|Issue Date: ||2008|
|Publisher: ||© Maney|
|Citation: ||HITT, D.J. ... et al, 2008. Melt compounding of rigid PVC formulations with hydrotalcites. Plastics, Rubber and Composites, 37 (9-10), pp. 445-452|
|Abstract: ||Hydrotalcites, compounds of magnesium–aluminium–hydroxycarbonate, are promoted as
environmentally safe materials for costabilisation of PVC products. Commercial grades of
hydrotalcites have been added to rigid PVC formulations, containing a range of different stabiliser
types, to evaluate their contribution to heat stability and their effect on mechanical properties.
Hydrotalcites are confirmed to be effective costabilisers for rigid PVC: static thermal stability
(through oven testing) and dynamic thermal stability (via torque rheometry) of PVC compounds
are modified by their presence. The extent of change is determined by the primary stabiliser type
and the grade of the hydrotalcite. Detailed analysis of mechanical properties has been carried out
on compression moulded samples and on extruded compounds. With the former, no significant
change in tensile or impact performance was observed, for hydrotalcite levels up to 5 phr. Charpy
impact data on extruded PVC have shown significant increase in performance of compounds
containing an acrylate modifier when hydrotalcites are used.|
|Description: ||This article was published in the journal, Plastics, Rubber and Composites [© Maney Publishing] and is available at: http://www.maney.co.uk/search?fwaction=show&fwid=199|
|Appears in Collections:||Published Articles (Materials)|
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